Recorked wine will only keep for a few days on its own, but weblog Food52 shows us an easy way to keep it a little bit longer: just put it in an airtight canning jar.

The key is to keep the wine from being exposed to air—the less air it comes into contact with, the longer it'll keep. This trick is cheap, easy, and will keep your wine for up to a week. Just pour it into the jar until it reaches the top, then screw on the cap. You'll have a little wine overflow, but that's good—that means there's as little air in the jar as possible once the lid's screwed on. Check out the video above to see it in action, and if you give it a shot, let us know how it works for you in the comments.